A method is provided on producing a yoghurt base composition, said method comprising combining butter milk and a small-size-particle WPC-fraction. In addition, the invention provides a method of producing a liquid yoghurt product or liquid yoghurt-like product, said method comprising mixing said yoghurt base composition with a liquid, such as water, milk, butter milk, milk permeate, juice, milk and/or juice concentrates. The invention also comprises a yoghurt base composition and a liquid yoghurt product or liquid yoghurt-like product comprising butter milk and a small-size-particle WPC-fraction. Furthermore, the invention provides a small-size-particle WPC-fraction, wherein said WPC particles have an average size in the range of 15-60 nanometer and the method of producing such a small-size-particle WPC-fraction.

A method is provided on producing a yoghurt base composition, said method comprising combining butter milk and a small-size-particle WPC-fraction. In addition, the invention provides a method of producing a liquid yoghurt product or liquid yoghurt-like product, said method comprising mixing said yoghurt base composition with a liquid, such as water, milk, butter milk, milk permeate, juice, milk and/or juice concentrates. The invention also comprises a yoghurt base composition and a liquid yoghurt product or liquid yoghurt-like product comprising butter milk and a small-size-particle WPC-fraction. Furthermore, the invention provides a small-size-particle WPC-fraction, wherein said WPC particles have an average size in the range of 15-60 nanometer and the method of producing such a small-size-particle WPC-fraction.